Substance 1 Substance 2 Substance 3 Substance 4 A mixture Poor conductor of heat and electricity • Forms crystals when solid High luster Conducts electricity when dissolved in water Brittle when solid • Contains particles that cannot be seen with the naked Good conductor of heat and electricity Malleable eye • Dull appearance with no luster Ductile . Hard and brittle when solid Cannot be separated by filtration High melting and boiling points Which substance is most likely a metal element?​

after making a punnet square using bv bv bv bv you will find that the ratio will be 9: 7 or a 128.6% probability.

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the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex